A cylinder is divided into two small cylinders. The surface area of the cylinder is increased by 80 square centimeters. The height of the cylinder is 30 centimeters. How many cubic centimeters is the volume of the cylinder? Please help me

Absolutely lovely girl,
Area of cylinder bottom:
80 △ 2 = 40 (cm2)
The cylinder volume is:
40 × 30 = 1200 (cm3)

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